<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <style type="text/css">
        	.nav{
        		width:200px;
        		height:100px;
        	}
        	.123{
        		color:red;
        	}
          	.123按考核过{
        		color:red;
        	}
        	.汉字{
        		color:red;
        	}
        	.*&{
        		color:red;
        	}
        </style>

    </head>
    <body>
    	<div class="nav 123">hhh</div>
    	<p class="123 123按考核过">hhhhhhhhhhh</p>
    	<p class="汉字">aljglakhg</p>
    	<!-- 不建议使用 -->
    	<p class="*&">aljglakhg</p>
    </body>
</html>
